Scraper for chain carriers.



F- PARDEE.

SCRAPER FOR CHAIN CARRiERS. APPLICATION man IFEB.'6.19I3- RENEWED FEB.11.1916,

1; 176,849. Patented Mar. 28, 1916.

I H i IA A. I

j I if, 52? 4 m4 2 ATTORNEY 1E s'rns FIB.

FRANK PARDEE, OF HAZLETON, PENNSYLVANIA.

SCRAPER FOR CHAIN CARRIERS.

Application filed February 6, 1913, Serial No. 746,600. Renewed February11, 1916.

To all whom it may concern:

Be it known that I, FRANK PARDEE, a citizen of the United States,residing in the city of Hazleton, county of Luzerne, and State ofPennsylvania, have invented certain new and useful Improvements inScrapers for Chain Carriers, of which the following is a specification,reference being had to the accompanying drawings, forming a part hereof.

In a general Way the invention relates to carriers of various kinds andmore particularly to that class of carriers or conveyors which are usedat coal mines or coal breakers for getting rid of the slate andimpurities taken out of the coal after it comes from the mines, and alsofor conveying the ashes and other refuse by means of an endless chainworking on sprocket wheels and propelled by suitable motive power.

More specifically the invention relates to the scraper which works in arunway of trough like formation with flat bottom and upright sides.

The object of the invention is to produce a scraper which can beattached to the chain carrier and held in operative position by a simpledevice, While permitting attachment and detachment of the scraperwithout great inconvenience or trouble. V

The invention consists in a scraper stamped and formed from a blank ofsheet metal, the scraper being combined with a retaining clevis, and inthe features of construction to be hereinafter more fully described andpointed out or indicated in and by the claim.

In the drawings Figure 1, is a perspective view of the scraper,retaining clevis, and a portion of the carrier chain. Fig. 2, is a sideelevation, partly in section, of the trough or runway showing severalscrapers and ref use materials to be conveyed to the dump heap. Fig. 3,is a front elevation of the scraper and its retaining clevis and showsin section, the link to which the scraper is attached. Fig. 4, is anedge view of the scraper showing one end of the retaining clevis, thefull link to which the scraper is attached and a broken part of theconnecting adjacent links of the chain carrier.

In the drawings A, represents the scraper B, the clevis and O, thechain. In Fig. 2, the trough D, is also shown.

The scraper A, is formed from a blank cut of sheet metal, of a patternthat will Copies of this patent may be obtained for five cents each, byaddressing the Specification of Letters Patent.

Patented Mar. 28, 1916.

Serial No. 77,791.

give the scraping part a length adapted to the width of the troughacross which it eX- tends. The upper part of the blank is some whatnarrower than the lower part, being meet from the corners a, a, upward.This upper part is also out out in the center so as to straddle a linkof the chain C, and on each side of the chain the metal is turned overand forms knuckles a, a, for admitting the longarm I), of the clevis B,which is preferably of a length to permit of its being bent and turneddown at b, as seen in Figs. 1, and 3. The short arm 6 of the clevisB,'passes through a knuckle a formed by rolling over some of the metalwhich is cut to admit the chain C.

The scraper A, may be provided with flanges a a so that when a verticallink of the chain is admitted in the center space the flanges a a bearbroadside along a portion of the link which serves to keep the scraperin alinement across the bottom of the trough D. This, however, may beeffected by any suitable means integral with either the clevis or thescraperor separate therefrom, but it is desirable to have as fewattachments and parts as may be consistent with practical efficiency.The lower knuckle (a, through which the clevis passes and the corners a,a, afford bearings for the clevis, at the back of the scraper, to aid insustaining the load carried in front of it, as seen in Fig. 2, but thescraper may be connected with the chain and reversed so as to comebehind the link if desired. Then the clevis B, is constructed with onelong and one short arm, the long arm is bent over, as shown, and thisavoids the necessity for extra securing devices in the way of keys, etc,which may, however, be used if preferred.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A scraper for chain carriers, formed of sheet metal having knuckles withspace for admitting a link of the chain between them, in combinationwith a clevis having one long and one short arm, said arms passingthrough said knuckles, whereby said scraper may be attached to a carrierchain.

FRANK PARDEE.

Witnesses:

FRANCIS H. BLATOH, S. A. BARBER:

"Commissioner of Patents,

Washington, D G.

